i just begged him, and he wouldn't. mary middleton and priscilla petra's husbands both died from carbon monoxide poisoning after the explosion. they were found wearing emergency breathing equipment, but state investigators concluded they had used less than 25% of their emergency oxygen supply. it is unclear from the report why both men had plenty of oxygen and yet suffocated. priscilla petra believes the equipment must have been broken. >> i just know that if that had worked, he would have walked out of there. they weren't that far underground. they were under there, i'm not sure exactly how far, but they could have walked out of there had they had that-- the oxygen. >> i feel like these men are a dime a dozen in the coal operators' eyes. it's all-- it's all in the product. "we want the money. get the coal out, get the coal out, get the coal out. >> why do you think the families of the miners who died are blaming the mine operators to such an extent? why do you think they're so convinced that the mine operators were at